first I fitted the calliper upside down and tried to bleed then and then realised moved the calliper so the nipple is on the top tried again but I can not get the front drivers side or the back passenger brake fluid out of them. took it to a garage and they are having the same problem, they think it is the master cylinder I think it might be a reallly bad air lock and they don't have a vacuum pump they are doing it the 2 man pedal way any advice please